Pith Number

pith:7KKAH6NH

pith:2016:7KKAH6NHWYCMEJT2LF7QDT66CW

not attested not anchored not stored refs pending

Semi-supervised Kernel Metric Learning Using Relative Comparisons

Antti Ukkonen, Aristides Gionis, Ehsan Amid

arxiv:1612.00086 v2 · 2016-12-01 · cs.LG · stat.ML

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:55:54.044817Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa9403f9a7b604c2267a597f01cfde158ab5cdcc3fe5be156fbe4f8e5274a2d2

Aliases

arxiv: 1612.00086 · arxiv_version: 1612.00086v2 · doi: 10.48550/arxiv.1612.00086 · pith_short_12: 7KKAH6NHWYCM · pith_short_16: 7KKAH6NHWYCMEJT2 · pith_short_8: 7KKAH6NH

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/7KKAH6NHWYCMEJT2LF7QDT66CW \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: fa9403f9a7b604c2267a597f01cfde158ab5cdcc3fe5be156fbe4f8e5274a2d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ddbbf97b916f083282431450793c9dc719191f4914a3c6c078de9ca611ff053e",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2016-12-01T00:16:53Z",
    "title_canon_sha256": "658c0d35ad0a5521d962328268bc5f3745b2cec315a4082975f655842efd4c2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.00086",
    "kind": "arxiv",
    "version": 2
  }
}